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  1. Indy Node
  2. INDY-1406

validator-info reading empty file



    • Bug
    • Status: Complete
    • Medium
    • Resolution: Done
    • None
    • 1.5
    • validator-info
    • This is on the live sovrin network, running 1.3.62

    • EV 18.14 Monitoring/Stability


      validator-info is reading files which might be updated exactly when validator-info access them.

      This is rare when validator-info is called manually but when validator-info is called by a script e.g. for monitoring purposes this happens quite often.

      I was able to force this by just repeatedly starting validator-info on the cli.

      Ways to solve this:

      1) don't read frequently changing files but query the indy-node service and the OS

      2) keep a number of input files around and if reading and parsing the latest fails go for the second oldest

      3) if reading and parsing files wait a second and try again


      (Intermediate solution: don't fail to provide any validator info but only fail on the info read from file but continue to provide info gathered from OS and services.)

      Traceback of a modified version of validator-info so the line numbers might not match your's:
      Traceback (most recent call last):
        File "/usr/local/bin/validator-info2", line 830, in <module>
        File "/usr/local/bin/validator-info2", line 818, in main
          print(get_stats_from_file(file_path, args.verbose, args.json, args.nagios))
        File "/usr/local/bin/validator-info2", line 590, in get_stats_from_file
          stats = json.loads(f.read())
        File "/usr/lib/python3.5/json/_init_.py", line 319, in loads
          return _default_decoder.decode(s)
        File "/usr/lib/python3.5/json/decoder.py", line 339, in decode
          obj, end = self.raw_decode(s, idx=_w(s, 0).end())
        File "/usr/lib/python3.5/json/decoder.py", line 357, in raw_decode
          raise JSONDecodeError("Expecting value", s, err.value) from None
      json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
      Here the file is empty and therefor not valid json.




            VladimirWork Vladimir Shishkin
            ignisvulpis Axel Nennker
            Andrew Nikitin, Axel Nennker, Vladimir Shishkin
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